Motor compressor unit



Oct. 11, 1938. E, slLTEN 2,133,179

MOTOR COMPHES SOR UNIT Filed NOV. 4, 1935 24 INVENTOR.

ATTORNEY.

Patented Oct. ll, 1938 UNITED STATES PATENT oEFlc-E Moron COMPRESSOR UNIT Ernst Silten, Berlin, Germany Application November 4, 1935, Serial No. 48,221

2 claims. (ci. 23o-ss) This invention relates to inhalation apparatus, more particularly to an apparatus in which the atomization of liquids is accomplished electrically driven pump.

by an Apparatus of the type described herein is applicable to various medicinal uses, and spe cically to the atomization of liquids for inhalation and thereby for treatment of the tissues of the nose,

throat and lungs.

It is very desirable for such cases to have an apparatus in which the pressure produced is substantially constant, and which is not subject to variations or pulsations. In many cases, it is desirable that a relatively large volume. of air under the constant pressure be available for atomization purposes Even though a relatively large volume of air be used, it is necessary that during the atomization process only a definitely limited amount of liquid be carried along by the air.

The present invention is intended and adapted to provide an apparatus having these functions,

it being among the objects of the present invention to devise an apparatus which is small and compact, which is capable of providing air under a uniform pressure suitably purified, free from pulsations, and adapted to give a uniform and constant atomization of liquids.

In carrying the objects of my invention into effect, I provide a motor and I couple directly thereto a pump which may be of the reciprocating type. motor either on top thereof or on the side Ordinarily, the pump is Secured to the` so that the shafts of the pump and motor are in alinement, either in parallel relation or in end to end relation. There is provided means for purifying the air prior to compression and also for purifying the compressed air and freeing it from extraneous matter as well as causing the same to have a uniform pressure in spite of the n on-uniformity of compression by the pump. The compressed air then passes through an at omizing device which is generally in the shape of an inverted cone, and the air under pressure into said device' near the tip of the cone,

escapes causing at a constant pressure and carrying substantiallyV f which uniform amount of the medication, all o is highly desirable.

In the -accompanying drawing constituting a part hereof, and in which like referenc acters indicate like parts,

e char- Fig. 1 is an elevationalv view of one form of apparatus constructed in accordance with the:Y present invention;

Fig. 2 is a vertical transverse cross-sectional view of a modified form of pump and indicates the manner in which it is attached to the motor; Some parts being shown in elevation; and,

Fig. 3 is a vertical cross-sectional view thereof taken along the line 3 3 of Fig. 2.' y

The apparatus comprises a base I to which a motor 2 is secured in any suitable manner. A connection 3 from the motor leads to a suitable source of electric power. On the motor Shaft is a pulley 4. A pump 5 is secured lto the top of the motor in such a position that the shaft thereof is parallel to and substantially vertically above the motor shaft. An opening 6 is provided for introducing a lubricant into the pump and the shaft thereof is provided with a pulley 1. A

belt 8 passes over pulleys 4 and 1 and serves asv a means for driving the pump. Associated with the pump is a chamber 9 wherein the compressed gases are caused to deposit any oil or other foreign matter contained therein, and the purified gases pass out of the top of said chamber through a nipple Ill and a flexible tube II to the atomizer I2. The air then passes through a tube |3, the open'end of which is near the bottom of chamber I4 of inverted cone shapeand carrying a liquid to be atomized. The stem I5 of chamber I4 is secured to a threaded member I 6 which is in turn secured by such threads to the atomizing device I2. The exit tube I1 from the top of said device is connected with a mask I8 adapted to cover the nose and mouth.

In operation of the device, the electrical connection 3 is joined to a suitable source of power causing operation of pump 5 andcompression of air, which then passes through chamber 9, nipple Ill, tube II, and through the atomizing device. By reason of the inverted cone shape of chamber Il and the relatively small amount of liquid contained therein, the air, even though it be under relatively high pressure and in large volume, takes up only a limited amount of ythe liquid therein. 'I'he air then travels upwardly and outwardly along the sloping sides of chamber I 4 and then reverses its direction whereby any large size globules of liquid are dropped and the air now contains only finely divided liquid. The atomized liquid then passes through exit opening I1, mask I8 and into the patients lungs. By reason of the chamber 9 any pulsations in the pressure of the air are eliminated, as it constitutes a storage and equalizing chamber in addition to reducing the velocity and direction of the air, which causes the same to drop any foreign matter therein. The pressure obtained by mechanical means is constant and relatively large in volume, even though the apparatus be small. Therefore, a suillciently large volume of air is produced for any desired indefinite length of time, so 'that a patient may be given a treatment in a satisfactory manner with a sufficient volume to completely ill the lugs.

In Figs. 2 and 3 there is shown a modified form of pump and other elements of the combination. As more clearly shown in Fig. 2, the motor shaft 28 projects beyond the end of the motor and there is secured thereto a casing having a cylinder 2i therein and a piston 22 operating in the cylinder. Threaded caps 23 and 24 serve to close the ends of the cylinder. The central portion 25 of the casing is provided with an enlarged space to contain mechanism for operating the piston. The piston is provided with a vertical slot 26 which is at its central portion, into which a slide 21 is adapted to move vertically. An eccentric 28 has an opening 28 into which the motor shaft 20 fits and is held by a set screw. A cylindrical boss 30, projecting from the face of eccentric 28, fits into a central opening in slide 21. In operation, the rotation of the motor shaft 20 causes corresponding rotation of eccentric 28 and the boss 30, being offset, causes an eccentric motion of the slide, which in turn causes reciprocation of the piston 22. Means 3| are provided for introducing lubricant into the cylinder.

At the bottom of the cylinder at opposite ends thereof, are inlet openings 32 for air, having screens 33 and absorbent material 34 covering said openings. Ring nuts 35 hold parts 33 and 34 in their proper positions. Exit openings 36 for compressed air are provided at opposite ends of the cylinder 2|, said openings being closed by ball valves 31 ,held in position by springs 38 which bear against threaded nuts 33. Bolts 40 threaded into the casing hold cover 4I and gasket 42 in position. Openings; 43 allow for the passage of compressed air into the relatively large chamber 44 containing filtering and purifying material 45. Opening 46 from chamber 44 has the nipple I0 threaded therein. The casing is provided with a flange 41 contacting with ange 48 of motor 2 and bolts 49 hold the pump and motor in the relative fixed position.

Although I have described my invention setamarre ting forth two specinc embodiments thereof, it is quite apparent that my invention is not limited merely to the forms described, as such description is intended to illustrate the invention and not to limit it. Various changes in the materials used, the location and arrangement of parts and in details of connections 'and of operation may be made without departing from the purpose stated herein. My invention is to be broadly construed and not to be limited except by the character of the claims appended hereto.

What I claim isz- 1. In an inhalation apparatus, a base, an electric motorsecured thereon, a casing secured on said motor, a double-ended pump cylinder within said casing, the shaft of said pump beingin alinement with the shaft of said motor, a valveless double-ended piston operated by said pump shaft. a chamber in said casing, in parallel alinement with the axis of said cylinder, air purifying means in 'said chamber, the volume thereof being large compared to the volume of said cylinder, and a single outlet therefrom, the diameter of said outlet being approximately the same as that of the exit openings from said pump, whereby the compressed air from a plurality of strokes is contained in said chamber and a substantially constant pressure of purified air substantially free from pulsations is obtained.

2. In an inhalation apparatus, a base, an electric motor secured thereon, a casing secured on said motor, a double-ended pump cylinder within said casing, the shaft of said pump being in alinement with the shaft of said motor, a valveless double-ended piston operated by said pump shaft, a chamber in said casing in parallel alinement with the axis of said cylinder, air purifying means in said chamber, valveless air inlet openings adjacent to the ends of said cylinder,

filter means therein, an air exit opening at each end of said cylinder, valves in said latter openings, passageways therefrom to said chamber, the volume thereof being large compared to the volume of said cylinder, and a single outlet therefrom, the diameter of said outlet being approximately the same as that of the exit openings from said pump, whereby the compressed air from a plurality of strokes is contained in said chamber and a substantially constant pressure of purified air substantially free from pulsations is obtained.

ERNST SILTEN. 

